HOUSTON — Barbara Bush, wife of former President H.W. Bush, will not seek additional medical treatment and instead will focus on “comfort care,” a Bush family spokesman said Sunday.

She has had a series of recent hospitalizations, but the family did not provide details about her condition.

She has been treated for decades for Graves’ disease, which is a thyroid condition.

“It will not surprise those who know her that Barbara Bush has been a rock in the face of her failing health, worrying not for herself — thanks to her abiding faith — but for others,” the statement reads in part.

Bush, 92, is in Houston, surrounded by her family and appreciates the kind messages and prayers she has been receiving, spokesman Jim McGrath said in a news release.

She was hospitalized for bronchitis treatment in January 2017.

Bush is one of only two first ladies who was also the mother of a president. The other was Abigail Adams, wife of John Adams and mother of John Quincy Adams.

She married George H.W. Bush in 1945. They had six children and have been married longer than any presidential couple in American history.

Eight years after she and her husband left the White House, she stood with her husband as their son George W. was sworn in as president.

Her husband, 94, also has had health issues in recent years.

In April 2017, he was released from a hospital in Houston after being treated for two weeks for a mild case of pneumonia and chronic bronchitis. Months earlier, he was a Houston’s Methodist Hospital for 16 days, also for pneumonia.

“Marcia and I have former First Lady Barbara Bush in our prayers,” U.S. Rep. Bob Latta (R-Bowling Green, Ohio) said Sunday afternoon. “She is a person we can all look up to, and it’s no surprise to hear that she has tackled her recent health obstacles with her characteristic toughness and grace. Our thoughts are with all of the Bush family during this difficult time.”